Class ScatterChart

java.lang.Object

com.codename1.charts.views.AbstractChart

com.codename1.charts.views.XYChart

com.codename1.charts.views.ScatterChart

public class ScatterChart
extends XYChart

Renders discrete X/Y points without connecting lines.

Configure the marker style through XYSeriesRenderer#setPointStyle and related options on the XYMultipleSeriesRenderer. As with other charts, wrap the instance in a com.codename1.charts.ChartComponent to place it on a form.

Field Summary

Fields

Modifier and Type	Field	Description
static final String	TYPE	The constant to identify this chart type.

Fields inherited from class XYChart

mDataset, mRenderer

Constructor Summary

Constructors

Constructor	Description
ScatterChart(XYMultipleSeriesDataset dataset, XYMultipleSeriesRenderer renderer)	Builds a new scatter chart instance.

Method Summary

Modifier and Type	Method	Description
protected ClickableArea[]	clickableAreasForPoints(List<Float> points, List<Double> values, float yAxisValue, int seriesIndex, int startIndex)	Returns the clickable areas for all passed points
void	drawLegendShape(Canvas canvas, SimpleSeriesRenderer renderer, float x, float y, int seriesIndex, Paint paint)	The graphical representation of the legend shape.
void	drawSeries(Canvas canvas, Paint paint, List<Float> points, XYSeriesRenderer renderer, float yAxisValue, int seriesIndex, int startIndex)	The graphical representation of a series.
String	getChartType()	Returns the chart type identifier.
int	getLegendShapeWidth(int seriesIndex)	Returns the legend shape width.
protected void	setDatasetRenderer(XYMultipleSeriesDataset dataset, XYMultipleSeriesRenderer renderer)

Methods inherited from class XYChart

draw, drawChartValuesText, drawPoints, drawSeries, drawText, drawXLabels, drawXTextLabels, drawYLabels, getCalcRange, getDataset, getDefaultMinimum, getPointsChart, getRenderer, getScreenR, getSeriesAndPointForScreenCoordinate, getXLabels, getYLabels, isRenderNullValues, isRenderPoints, setCalcRange, setScreenR, toRealPoint, toRealPoint, toScreenPoint, toScreenPoint

Methods inherited from class AbstractChart

calculateDrawPoints, drawBackground, drawLabel, drawLegend, drawPath, drawPath, drawString, getExceed, getLabel, getLegendSize, isNullValue, isVertical

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

TYPE

public static final String TYPE

The constant to identify this chart type.

See Also:

• Constant Field Values

Constructor Details

ScatterChart

public ScatterChart(XYMultipleSeriesDataset dataset,
 XYMultipleSeriesRenderer renderer)

Builds a new scatter chart instance.

Parameters

• dataset: the multiple series dataset

• renderer: the multiple series renderer

Method Details

setDatasetRenderer

protected void setDatasetRenderer(XYMultipleSeriesDataset dataset,
 XYMultipleSeriesRenderer renderer)

Overrides:

setDatasetRenderer in class XYChart

drawSeries

public void drawSeries(Canvas canvas,
 Paint paint,
 List<Float> points,
 XYSeriesRenderer renderer,
 float yAxisValue,
 int seriesIndex,
 int startIndex)

The graphical representation of a series.

Parameters

• canvas: the canvas to paint to

• paint: the paint to be used for drawing

• points: the array of points to be used for drawing the series

• seriesRenderer: the series renderer

• yAxisValue: the minimum value of the y axis

• seriesIndex: the index of the series currently being drawn

• startIndex: the start index of the rendering points

Specified by:

drawSeries in class XYChart

clickableAreasForPoints

protected ClickableArea[] clickableAreasForPoints(List<Float> points,
 List<Double> values,
 float yAxisValue,
 int seriesIndex,
 int startIndex)

Description copied from class: XYChart

Returns the clickable areas for all passed points

Parameters

• points: the array of points

• values: the array of values of each point

• yAxisValue: the minimum value of the y axis

• seriesIndex: the index of the series to which the points belong

• startIndex: the start index of the rendering points

Returns

an array of rectangles with the clickable area

Specified by:

clickableAreasForPoints in class XYChart

getLegendShapeWidth

public int getLegendShapeWidth(int seriesIndex)

Returns the legend shape width.

Parameters

• seriesIndex: the series index

Returns

the legend shape width

Specified by:

getLegendShapeWidth in class AbstractChart

drawLegendShape

public void drawLegendShape(Canvas canvas,
 SimpleSeriesRenderer renderer,
 float x,
 float y,
 int seriesIndex,
 Paint paint)

The graphical representation of the legend shape.

Parameters

• canvas: the canvas to paint to

• renderer: the series renderer

• x: the x value of the point the shape should be drawn at

• y: the y value of the point the shape should be drawn at

• seriesIndex: the series index

• paint: the paint to be used for drawing

Specified by:

drawLegendShape in class AbstractChart

getChartType

public String getChartType()

Returns the chart type identifier.

Returns

the chart type

Specified by:

getChartType in class XYChart